United States. Department of the Treasury. "Finance Report: Report of the Secretary of the Treasury, Showing the Receipts and Expenditures, &c., for the Fiscal Year Ending June 30, 1850,"
Annual Report of the Secretary of the Treasury on the State of the Finances
(1850).
https://fraser.stlouisfed.org/title/194/item/5496, accessed on November 19, 2018.